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	<title> jQuery.extend( object );  扩展jQuery对象本身</title>
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// jQuery.extend( object );  扩展jQuery对象本身
// 用法一：
jQuery.extend({
  min: function(a, b) { return a < b ? a : b; },
  max: function(a, b) { return a > b ? a : b; }
});
var num = jQuery.min(2,3); // => 2
console.log(num); // 2
var num = jQuery.max(4,5); // => 5
console.log(num); // 5

// 用法二：
var num = 10;
var order = new Object();;
// var order = new Array();; // 也是可以的！
order['a'] = 'aaa';
order['b'] = 'bbb';
order['c'] = 'ccc';
console.log(order); 
jQuery.extend( order,{c:num} );
console.log(order); 
/*
对象：
	Object {a: "aaa", b: "bbb", c: "ccc"}
	Object {a: "aaa", b: "bbb", c: 10}
数组：
	[a: "aaa", b: "bbb", c: "ccc"]
	[a: "aaa", b: "bbb", c: 10]
*/
</script>
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